Description
The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize(). A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server.
Published: 2026-08-25
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 28 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Typo3
Typo3 extension "html5 Video Player Vs. Powermail"
Vendors & Products Typo3
Typo3 extension "html5 Video Player Vs. Powermail"

Tue, 25 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 25 Aug 2026 09:15:00 +0000

Type Values Removed Values Added
Description The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize(). A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server.
Title Remote Code Execution in extension "HTML5 Video Player vs. Powermail" (html5videoplayer_powermail)
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Typo3 Extension "html5 Video Player Vs. Powermail"
cve-icon MITRE

Status: PUBLISHED

Assigner: TYPO3

Published:

Updated: 2026-08-25T14:05:40.648Z

Reserved: 2026-08-20T13:10:15.962Z

Link: CVE-2026-77138

cve-icon Vulnrichment

Updated: 2026-08-25T14:05:01.033Z

cve-icon NVD

Status : Deferred

Published: 2026-08-25T09:17:34.497

Modified: 2026-08-26T17:13:53.420

Link: CVE-2026-77138

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T20:37:48Z

Weaknesses